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【单选题】In a purely biological sense, fear begins with the body’’s system for reacting to things that can harm us—the so-called fight-or-flight response. "An animal that can’’t detect danger can’’t stay alive...
A.
reactions of humans and animals to dangerous situations are often unpredictable
B.
memories of significant events enable people to control fear and distress
C.
people’’s unpleasant memories are derived from their feelings of fear
D.
the amygdala plays a vital part in human and animal responses to potential danger
【多选题】星状胶质细胞的功能是()
A.
具有吞噬功能
B.
参与血－脑脊液屏障的构成
C.
当脑组织发生水肿时，其并无明显变化
D.
构成脑内神经纤维的髓鞘
E.
是形成条件反射的基本细胞